$3.[15\%]$ Determine whether each of the following statements is True $($T$)$ or False $($F$),$ and explain your answer.

$(1)$ Graphics applications deliver higher performance because the DRAM chips on GPU cards help reduce memory latency.

$(2)$ A shared memory can be created for computer clusters to exchange data.

$(3)$ A GPU is always faster than a CPU at the cost that the GPU has higher power consumption.

$(4)$ Given the two$-$level caches, the purpose of the first$-$level cache is more about miss rate, and the purpose of the second$-$level cache is more about hit time.

$(5)$ Associativity of the addition operation holds for both integer and floating$-$point numbers.